Question

question 17.
the diagram (figure 1) shows the stages of the cell cycle. chromosomes are copied during the...
a. mitosis
b. g2 phase
c. g1 phase
d. s phase

Explanation:

To solve this, we recall the cell cycle stages. The S Phase (Synthesis Phase) is when DNA (and thus chromosomes) is replicated. Mitosis is cell division, G1 is growth, G2 is preparation for mitosis. So chromosomes are copied in S Phase.

Answer:

D. S Phase